Summit Leadership

Leading the NAIIS

TAN-Headshot-June-2013-Color-smlL.J TAN, MS, PhD

Dr. L.J Tan is the Chief Strategy Officer for the Immunization Action Coalition, which he joined in January 2013. There, L.J is leading the IAC’s new strategic direction on national immunization advocacy and policy development. Prior to that, L.J was the Director of Medicine and Public Health at the American Medical Association (AMA) for 15 years, where he led multiple AMA efforts in immunizations and infectious diseases, prevention and health promotion, aging and community health, and eliminating healthcare disparities and improving the health of physicians.

Dr. Tan received his PhD in Immunology/Microbiology from Northwestern University Medical School, and completed a postdoctoral fellowship in Molecular Immunology at the University of Chicago Hospitals.

Dr. Tan was recently elected onto the National Quality Forum’s Adult Immunizations Expert Committee, onto the European Society of Clinical Microbiology and Infectious Diseases Vaccine Study Group (EVASG), and serves as an editor for BMC Infectious Diseases.

He just completed his term as an elected member of the federal National Vaccine Advisory Committee (NVAC). He still serves on the NVAC’s HPV, Vaccine Confidence, and Maternal Immunization working groups. Previously, L.J chaired the Immunization Infrastructure Working Group and also served on the vaccine safety Workgin.

Dr. Tan has also served as a member of the federal Advisory Committee for Immunization Practices (ACIP), and he still serves on the Adult Immunization working group. Previously, L.J also served on the influenza, zoster, and evidence-based working groups.

Dr. Tan co-founded (with the CDC and the NVPO) and currently co-chairs the National Adult and Influenza Immunization Summit, and founded and organized the first National Immunization Congress in 2007, and organized the Second National Immunization Congress in 2010. He served as a primary consultant for the first European Union Influenza Summit in 2011, and the first Asian Pacific Influenza Summit in 2012, and continues to advise those bodies.

He serves or has served on the Steering Committees for the 317 Coalition, the National Network for Immunization Information (NNii), the Partnership to End Cervical Cancer, the National Viral Hepatitis Roundtable, and the Scientific Advisory Boards for the Immunization Action Coalition and Coalition for Safe Community Needle Disposal.

L.J is a member of numerous professional organizations including the American Public Health Association, the Federation of American Societies for Experimental Biology, the American Society of Microbiology, the American Association of Immunologists, the National Council of Asian & Pacific Islander Physicians, and the Infectious Diseases Society of America.

Ram Koppaka, MD, PhDRAM KOPPAKA, MD, PhD

Ram Koppaka, MD, PhD is the Associate Director for Adult Immunization in the CDC Immunization Services Division. From 2016-17, he served as the HHS Regional Health Administrator for Region IX, based in San Francisco. He was previously a senior medical officer with the Centers for Disease Control and Prevention and had been assigned to the NYC Department of Health and Mental Hygiene (DOHMH) from 2007-2016. During his tenure in NYC, he served as Director of the Provider Education Program In addition, he served in a number of acting capacities, including as Assistant Commissioner for the Bureau of Vital Statistics and Deputy Commissioner for Epidemiology. During 2006, he was assigned to the United Nations System Influenza Coordination Team charged with preparing the UN System for pandemic influenza. From 2003-6, he was the Associate Director for Policy for the CDC, Division of Global Migration and Quarantine. From 1998-2003, he was assigned by CDC to the Commonwealth of Virginia, Division of Tuberculosis Control where served as Director.

Dr. Koppaka was born in Montclair, NJ and grew up in Gainesville, Florida. He earned his BS in microbiology (High Honors), MD (High Honors), and PhD in Medical Sciences all from the University of Florida. He served his residency in Internal Medicine and fellowship in Pulmonary and Critical Care Medicine at Washington University in St. Louis. He is licensed to practice medicine in the Commonwealth of Virginia and States of Georgia and New York and is Board Certified in Internal Medicine and Pulmonary Medicine. He is a Captain in the US Public Health Service.


Tammy R. Beckham, DVM, PhD joined the Office of the Assistant Secretary for Health and Human Services (OASH) as the acting director of both the National Vaccine Program Office (NVPO) and Office of HIV/AIDS and Infectious Disease Policy (OHAIDP) in 2018.

Tammy’s extensive scientific experience and service leading large organizations and projects within academia, the military (she achieved the rank of CAPT in the U.S. Army), federal and state governments make her an ideal fit for both NVPO and OHAIDP. She joins OASH from Kansas State University where she is a professor in the Department of Diagnostic Medicine and Pathology, College of Veterinary Medicine.

Most recently, Tammy was working with the Cooperative Biological Engagement Program (CBEP), Defense Threat Reduction Agency (DTRA), Department of Defense at Fort Belvoir in Virginia. In this role, she was responsible for managing a comprehensive international science engagement and diplomacy portfolio in the European and Central Command regions. In addition, she led a comprehensive Agency wide effort to restructure and enhance the CBEPs global training portfolio.

From 2015-2017, Tammy was the Dean of the College of Veterinary Medicine at Kansas State University. As Dean of the College, she led more than 700 faculty and staff and was responsible for oversight of academic programs, the veterinary health center, and the Kansas State Veterinary Diagnostic laboratory. During her tenure, Tammy led the College through a successful accreditation visit, obtained funding for critically needed infrastructure upgrades and led the College as it worked to modernize its veterinary educational curriculum.

From 2010-2015, she was the Director of Infectious Animal Diseases at the Texas A & M University System. There Tammy provided leadership and oversight to the Institute and led and executed a multi-million dollar research portfolio aimed at defending the nation from high consequence foreign animal, emerging, and zoonotic diseases.

From 2008-2014, Tammy was the director of the Texas A & M Veterinary Medical Diagnostic Laboratory. In this role, she provided leadership for one of the largest and busiest veterinary diagnostic laboratories in the United States.

Additionally, Tammy has served as director of the Foreign Animal Disease Diagnostic Laboratory, a part of the U.S. Department of Agriculture’s Plum Island Animal Disease Center in New York.

Tammy received her doctor of veterinary medicine (Magna Cum Laude) and PhD in biomedical science degrees from Auburn University. She also holds a master’s degree in music from the University of Cincinnati.

She has published more than 20 research articles, testified before the House Committees on Homeland Security and Agriculture and delivered numerous presentations domestically and abroad.